ASTROSAT CZTI

Data Quality Report

Orbit 20170813_A03_039T01_9000001462_level2

Creation date: 2017-09-24T15:15:43.059301
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_039T01_9000001462cztM0_level2.evt modeM0/AS1A03_039T01_9000001462cztM0_level2_quad_clean.evt
Size (bytes)6,754,412,160933,753,600
Size6.3 GB 890.5 MB
Events in quadrant A35,137,6446,176,406
Events in quadrant B36,349,4916,249,040
Events in quadrant C31,352,3746,250,001
Events in quadrant D97,013,5634,807,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014180
B014180
C014200
D014200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520980
B01545400
C01434240
D03347230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6993113551.937624%
B6993810371.482742%
C699384830.690612%
D698442637637.764160%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 81393 69993 599 599 0.74% 0.86%
B 81393 69996 194 194 0.24% 0.28%
C 81393 69995 2 2 0.00% 0.00%
D 81393 69906 25381 25381 31.18% 36.31%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 223 1595611 962.47 8242 8089 1649.4
A 15 239 876611 526.56 8242 8089 1649.4
A 8 15 455445 271.22 8242 8089 1649.4
B 4 239 1299566 834.82 8278 8091 1547.0
B 4 81 1106174 709.81 8278 8091 1547.0
B 0 219 615122 392.39 8278 8091 1547.0
C 14 67 129732 66.58 7991 8026 1828.0
C 13 61 60457 28.68 7991 8026 1828.0
C 14 234 46431 21.01 7991 8026 1828.0
D 1 52 61241267 39325.7 6561 6370 1557.1
D 8 195 3960974 2539.69 6561 6370 1557.1
D 2 16 1874329 1199.62 6561 6370 1557.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter